TermCymru

Results are displayed in Welsh alphabetical order A-Y

Welsh: crynodiad ffurfiant rhywogaeth gemegol

English: chemical speciation concentration

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: crynodiadau ffurfiant rhywogaethau cemegol

Context: Yn y rheoliad hwn, ystyr “crynodiadau ffurfiant rhywogaethau cemegol” (“chemical speciation concentrations”) yw crynodiadau o gydrannau neu rywogaethau cemegol gwahanol o PM2·5.

Notes: Daw'r frawddeg gyd-destunol o Reoliadau Safonau Ansawdd Aer (Cymru) 2010.

Last updated: 16 September 2024

Welsh: cynllun gweithredu ar gyfer rhywogaeth

English: SAP

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Definition: species action plan

Last updated: 11 January 2007

Welsh: cynllun gweithredu ar gyfer rhywogaeth

English: species action plan

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Definition: SAP

Last updated: 3 October 2003

Welsh: cynllun rheoli rhywogaeth

English: species management plan

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 19 May 2004

Welsh: Cytundeb Rheoli Rhywogaeth

English: Species Control Agreement

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: Cytundebau Rheoli Rhywogaethau

Definition: Species Control Agreements and Species Control Orders set out measures that must be taken to control or eradicate an invasive non-native animal or plant. Species Control Agreements are voluntary and are used to formalise what steps need to be taken, by whom and by when, in respect of invasive non-native species.

Notes: Dim ond yn yr Alban ar hyn o bryd.

Last updated: 13 April 2017

Welsh: Gorchymyn Rheoli Rhywogaeth

English: Species Control Order

Status B

Subject: Environment

Part of speech: Noun, Masculine, Singular

Plural: Gorchmynion Rheoli Rhywogaethau

Definition: Species Control Agreements and Species Control Orders set out measures that must be taken to control or eradicate an invasive non-native animal or plant. Species Control Orders are compulsory and can be used to compel certain actions in respect of invasive non-native species when the voluntary approach has failed or the situation is urgent.

Notes: Dim ond yn yr Alban ar hyn o bryd.

Last updated: 13 April 2017

Welsh: grwpiau rhywogaeth

English: species groups

Status C

Subject: Agriculture

Part of speech: Noun, Plural

Last updated: 31 December 2008

Welsh: rhywogaeth

English: species

Status A

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Last updated: 29 July 2003

Welsh: rhywogaeth allweddol

English: keystone species

Status C

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Definition: A species whose addition to or loss from an ecosystem leads to major changes in abundance or occurrence of at least one other species.

Last updated: 20 April 2011

Welsh: rhywogaeth annymunol

English: undesirable species

Status B

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau annymunol

Last updated: 23 September 2020

Welsh: rhywogaeth a nodir

English: notable species

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau a nodir

Definition: Rhywogaeth sydd â dynodiad cadwraeth, ond nad oes ganddi amddiffyniad cyfreithiol.

Last updated: 23 March 2021

Welsh: rhywogaeth atal

English: choke species

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau atal

Definition: Rhywogaethau sydd â chwota ar lefel isel iawn. Pe byddid yn cyrraedd trothwy'r cwota hwnnw byddai rhaid i'r cwch pysgota aros yn yr harbwr hyd yn oed os oedd ganddo gwota ar ôl ar gyfer rhywogaethau eraill.

Last updated: 28 February 2019

Welsh: rhywogaeth a warchodir

English: protected species

Status C

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: plant and animal species, including all wild birds, protected under the Conservation (Natural Habitats and Conservation) Regulations 1994, the Wildlife and Countryside Act 1981 and subsequent amendments, or other species protected under legislation specific to them

Last updated: 10 January 2003

Welsh: Rhywogaeth a Warchodir gan Ewrop

English: European Protected Species

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: Rhywogaethau a Warchodir gan Ewrop

Context: ylai cynigion ddangos sut maent yn cydymffurfio â deddfwriaeth sy’n gwarchod Rhywogaethau a Warchodir gan Ewrop gan ei fod yn drosedd anafu, lladd neu aflonyddu ar rywogaeth a warchodir yn fwriadol.

Last updated: 6 June 2019

Welsh: Rhywogaeth a Warchodir gan y DU

English: UK Protected Species

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: Rhywogaethau a Warchodir gan y DU

Definition: Rhywogaeth a warchodir o dan ddeddfwriaeth ddomestig y DU yn unig yn hytrach na chyfarwyddeb Ewropeaidd.

Last updated: 16 September 2015

Welsh: Rhywogaeth â Blaenoriaeth

English: Priority Species

Status C

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Last updated: 3 October 2003

Welsh: rhywogaeth brae

English: forage species

Status B

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau prae

Definition: Rhywogaeth fach yng nghanol y gadwyn fwyd forol, sy'n bwydo ar blancton ac sy'n ysglyfaeth i greaduriaid mwy.

Last updated: 2 December 2021

Welsh: Rhywogaeth Bwysig Iawn i Fioamrywiaeth Cymru

English: Principal Biodiversity Species in Wales

Status C

Subject: Environment

Part of speech: Noun, Masculine, Singular

Definition: Rhestr o rywogaethau sy’n cael eu defnyddio fel mesur o gyflwr bioamrywiaeth Cymru.

Last updated: 13 February 2012

Welsh: rhywogaeth bysgod sy'n arbenigo mewn clywed

English: hearing-specialist fish species

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau pysgod sy'n arbenigo mewn clywed

Last updated: 23 March 2021

Welsh: rhywogaeth ddangosol

English: indicator species

Status C

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Definition: A species whose presence indicates the presence of a set of other species and whose absence indicates the lack of that entire set of species.

Last updated: 20 April 2011

Welsh: rhywogaeth eilaidd

English: secondary species

Status B

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Last updated: 10 July 2012

Welsh: rhywogaeth estron

English: non-indigenous species

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau estron

Context: Rhywogaethau sydd y tu allan i’w tiriogaeth naturiol yw rhywogaethau estron.

Last updated: 6 June 2019

Welsh: rhywogaeth estron

English: non-native species

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau estron

Definition: Anifail neu blanhigyn a gyflwynir yn fwriadol neu’n anfwriadol i amgylchedd naturiol lle nad yw fel arfer i’w gael.

Notes: Mae’r term Saesneg alien species yn gyfystyr.

Last updated: 16 September 2024

Welsh: rhywogaeth estron

English: alien species

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau estron

Definition: Anifail neu blanhigyn a gyflwynir yn fwriadol neu’n anfwriadol i amgylchedd naturiol lle nad yw fel arfer i’w gael.

Notes: Mae’r term Saesneg non-native species yn gyfystyr.

Last updated: 18 September 2024

Welsh: rhywogaeth estron oresgynnol

English: invasive alien species

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau estron goresgynnol

Definition: Anifail neu blanhigyn a gyflwynir yn fwriadol neu’n anfwriadol i amgylchedd naturiol lle nad yw fel arfer i’w gael, gyda goblygiadau andwyol difrifol i’w amgylchedd newydd. Gall hefyd achosi niwed economaidd a niwed i iechyd pobl.

Notes: Mae’r term Saesneg invasive non-native species yn gyfystyr.

Last updated: 16 September 2024

Welsh: rhywogaeth estron oresgynnol

English: invasive non-native species

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau estron goresgynnol

Notes: Mae’r term Saesneg invasive alien species yn gyfystyr.

Last updated: 18 September 2024

Welsh: Rhywogaeth Forol a Warchodir gan Ewrop

English: European Marine Protected Species

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: Rhywogaethau Morol a Warchodir gan Ewrop

Definition: Rhywogaeth forol – o forfilod, dolffiniaid neu lamhidyddion - a warchodir drwy ddeddfwriaeth Ewropeaidd (y Gyfarwyddeb Cynefinoedd), a weithredir yng Nghymru gan Reoliadau Gwarchod Cynefinoedd a Rhywogaethau 2010.

Last updated: 16 September 2015

Welsh: rhywogaeth frodorol

English: native species

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau brodorol

Last updated: 22 April 2025

Welsh: rhywogaeth fudol

English: mobile species

Status C

Subject: Environment

Part of speech: Noun, Feminine, Singular

Context: Also known as “migratory species”.

Last updated: 25 November 2014

Welsh: rhywogaeth fudol

English: migratory species

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau mudol

Last updated: 22 April 2025

Welsh: rhywogaeth fudol sy'n bresennol yn rheolaidd

English: regularly occurring migratory species

Status A

Subject: Environment

Part of speech: Noun, Plural

Plural: rhywogaethau mudol sy'n bresennol yn rheolaidd

Last updated: 22 April 2025

Welsh: rhywogaeth gonfensiynol

English: conventional species

Status B

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Last updated: 30 July 2003

Welsh: rhywogaeth hadog

English: seed rich species

Status C

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Last updated: 24 February 2005

Welsh: rhywogaeth model esblygol K

English: K-selected species

Status B

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: K-selection is a type of selection that favours organisms with a low rate of reproduction but whose populations expand to the maximum number of individuals that the habitat can support (the carrying capacity of the habitat). K-selected species (or K strategists) tend to be highly adapted to their environment and are able to compete successfully for food and other resources.

Last updated: 9 March 2017

Welsh: rhywogaeth o dan reolaeth

English: controlled species

Status C

Subject: Agriculture

Part of speech: Noun, Masculine, Singular

Last updated: 14 November 2007

Welsh: Rhywogaeth o Ddiddordeb i'r Gymuned

English: Species of Community Interest

Status C

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Definition: Neu i’r Undeb Ewropeaidd. Jargon Ewropeaidd am yr anifeiliaid a’r planhigion sy’n cael eu henwi yn Atodiadau amrywiol y Gyfarwyddeb Cynefinoedd.

Last updated: 31 March 2009

Welsh: rhywogaeth oresgynnol

English: invasive species

Status B

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Definition: A species occurring as a result of human activities beyond its accepted normal distribution and which threatens valued environmental, agricultural or personal resources by the damage it causes.

Last updated: 22 September 2004

Welsh: rhywogaeth oresgynnol ddyfrol

English: invasive aquatic species

Status C

Subject: Environment

Part of speech: Noun, Feminine, Singular

Last updated: 13 November 2014

Welsh: rhywogaeth restredig

English: prescribed species

Status C

Subject: Agriculture

Part of speech: Noun, Feminine, Singular

Last updated: 4 August 2010

Welsh: rhywogaeth sy'n bridio

English: breeding species

Status A

Subject: Environment

Part of speech: Noun, Feminine, Singular

Plural: rhywogaethau sy'n bridio

Last updated: 22 April 2025

Welsh: rhywogaeth sy'n cael ei gwarchod yn genedlaethol

English: nationally protected species

Status C

Subject: Environment

Part of speech: Noun, Feminine, Singular

Definition: Rhywogaeth sydd ar restr y wlad o rywogaethau sydd i gael eu gwarchod.

Last updated: 7 November 2011

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